4040664 has 32 divisors (see below), whose sum is σ = 10429440. Its totient is φ = 1303200.

The previous prime is 4040653. The next prime is 4040669. The reversal of 4040664 is 4660404.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972 + ... + 3459.

It is an arithmetic number, because the mean of its divisors is an integer number (325920).

Almost surely, 2^4040664 is an apocalyptic number.

It is an amenable number.

4040664 is an abundant number, since it is smaller than the sum of its proper divisors (6388776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4040664 is a wasteful number, since it uses less digits than its factorization.

4040664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 4040664 is about 2010.1402936114. The cubic root of 4040664 is about 159.2762099032.

It can be divided in two parts, 40406 and 64, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 4040664 in words is "four million, forty thousand, six hundred sixty-four".